1 files changed, 21 insertions, 13 deletions

diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c
index 1f064f4b32df..9305e958fc66 100644
--- a/drivers/media/radio/radio-aimslab.c
+++ b/drivers/media/radio/radio-aimslab.c
@@ -51,6 +51,7 @@ static struct mutex lock;
 
 struct rt_device
 {
+        unsigned long in_use;
         int port;
         int curvol;
         unsigned long curfreq;
@@ -245,8 +246,7 @@ static int vidioc_querycap(struct file *file, void  *priv,
 static int vidioc_g_tuner(struct file *file, void *priv,
                                         struct v4l2_tuner *v)
 {
-        struct video_device *dev = video_devdata(file);
-        struct rt_device *rt = dev->priv;
+        struct rt_device *rt = video_drvdata(file);
 
         if (v->index > 0)
                 return -EINVAL;
@@ -273,8 +273,7 @@ static int vidioc_s_tuner(struct file *file, void *priv,
 static int vidioc_s_frequency(struct file *file, void *priv,
                                         struct v4l2_frequency *f)
 {
-        struct video_device *dev = video_devdata(file);
-        struct rt_device *rt = dev->priv;
+        struct rt_device *rt = video_drvdata(file);
 
         rt->curfreq = f->frequency;
         rt_setfreq(rt, rt->curfreq);
@@ -284,8 +283,7 @@ static int vidioc_s_frequency(struct file *file, void *priv,
 static int vidioc_g_frequency(struct file *file, void *priv,
                                         struct v4l2_frequency *f)
 {
-        struct video_device *dev = video_devdata(file);
-        struct rt_device *rt = dev->priv;
+        struct rt_device *rt = video_drvdata(file);
 
         f->type = V4L2_TUNER_RADIO;
         f->frequency = rt->curfreq;
@@ -310,8 +308,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
 static int vidioc_g_ctrl(struct file *file, void *priv,
                                         struct v4l2_control *ctrl)
 {
-        struct video_device *dev = video_devdata(file);
-        struct rt_device *rt = dev->priv;
+        struct rt_device *rt = video_drvdata(file);
 
         switch (ctrl->id) {
         case V4L2_CID_AUDIO_MUTE:
@@ -327,8 +324,7 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
 static int vidioc_s_ctrl(struct file *file, void *priv,
                                         struct v4l2_control *ctrl)
 {
-        struct video_device *dev = video_devdata(file);
-        struct rt_device *rt = dev->priv;
+        struct rt_device *rt = video_drvdata(file);
 
         switch (ctrl->id) {
         case V4L2_CID_AUDIO_MUTE:
@@ -378,10 +374,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct rt_device rtrack_unit;
 
+static int rtrack_exclusive_open(struct inode *inode, struct file *file)
+{
+        return test_and_set_bit(0, &rtrack_unit.in_use) ? -EBUSY : 0;
+}
+
+static int rtrack_exclusive_release(struct inode *inode, struct file *file)
+{
+        clear_bit(0, &rtrack_unit.in_use);
+        return 0;
+}
+
 static const struct file_operations rtrack_fops = {
         .owner          = THIS_MODULE,
-        .open           = video_exclusive_open,
-        .release        = video_exclusive_release,
+        .open           = rtrack_exclusive_open,
+        .release        = rtrack_exclusive_release,
         .ioctl          = video_ioctl2,
 #ifdef CONFIG_COMPAT
         .compat_ioctl   = v4l_compat_ioctl32,
@@ -408,6 +415,7 @@ static struct video_device rtrack_radio = {
         .name           = "RadioTrack radio",
         .fops           = &rtrack_fops,
         .ioctl_ops      = &rtrack_ioctl_ops,
+        .release        = video_device_release_empty,
 };
 
 static int __init rtrack_init(void)
@@ -424,7 +432,7 @@ static int __init rtrack_init(void)
                 return -EBUSY;
         }
 
-        rtrack_radio.priv=&rtrack_unit;
+        video_set_drvdata(&rtrack_radio, &rtrack_unit);
 
         if (video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
                 release_region(io, 2);